Adaptive control of DC-DC converters based on input equivalent disturbance

Author

Wenjin, Hu ; Donghua, Zhou

Author_Institution

Dept. of Electron. Inf. Eng., Chongqing Univ. of Sci. & Technol., Chongqing

fYear

2008

fDate

16-18 July 2008

Firstpage

38

Lastpage

42

Abstract

DC-DC converter is a class of variable-structure nonlinear time-varying systems, conventional control algorithm is difficult to achieve satisfactory steady and dynamic performance. Taking buck converter as a study object, this paper realizes an adaptive controller for DC-DC converter by online estimating the input equivalent disturbance caused by its inaccurate parameters by use of strong tracking filter, and by correcting control variables of generalized generic model control to compensate effects of time-varying parameters and unknown disturbance. Simulation results testify this adaptive DC-DC converter has a good robustness and control performance while input voltage, reference voltage, load or other parameter changes.

Keywords

DC-DC power convertors; adaptive control; compensation; nonlinear control systems; time-varying systems; tracking filters; variable structure systems; DC-DC converter; adaptive control; buck converter; generalized generic model control; input equivalent disturbance; time-varying parameter compensation; tracking filter; variable-structure nonlinear time-varying system; Adaptive control; Adaptive filters; Buck converters; Control systems; DC-DC power converters; Nonlinear control systems; Programmable control; Robust control; Testing; Time varying systems; Adaptive control; DC-DC converter; Input equivalent disturbance; Strong tracking filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference, 2008. CCC 2008. 27th Chinese

Conference_Location

Kunming

Print_ISBN

978-7-900719-70-6

Electronic_ISBN

978-7-900719-70-6

Type

conf

DOI

10.1109/CHICC.2008.4605189

Filename

4605189